
package com.yyh.myblog.dao;

import com.yyh.myblog.entity.Blog;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;

import javax.transaction.Transactional;
import java.util.List;

/**
 * @author yyh
 * @date 2021/2/24 17:16
 */

public interface BlogRepository extends JpaRepository<Blog, Long>, JpaSpecificationExecutor<Blog> {

    @Query("select b from Blog b where b.recommend = true")
    List<Blog> findTop(Pageable pageable);

    @Query("select b from Blog b where b.sticky = true")
    List<Blog> findStickyTop(Pageable pageable);

    @Query("select b from Blog b where b.title like ?1 or b.description like ?1")
    Page<Blog> findByQuery(String query, Pageable pageable);

    /**
     * 更新浏览量
     * @param id
     * @return
     */
    @Transactional
    @Modifying
    @Query("update Blog b set b.views=b.views+1 where b.id=?1")
    int updateViews(Long id);

    @Query("select function('date_format',b.updateTime,'%Y')as year from Blog b group by function('date_format',b.updateTime,'%Y') order by year DESC")
    List<String> findGroupYear();

    @Query("select b from Blog b where function('date_format',b.updateTime,'%Y') = ?1")
    List<Blog> findByYear(String year);

    @Transactional
    @Modifying
    @Query("update Blog b set b.commentCount = b.commentCount+1 where b.id = ?1")
    int addCommentCount(Long blogId);

}
